Only slightly offtopic, a really great book I'd recommend is "Vehicles, Experiments in Synthetic Psychology" by Valentino Braitenberg. He uses the term "Vehicl

Only slightly offtopic, a really great book I'd recommend is "Vehicles, Experiments in Synthetic Psychology" by Valentino Braitenberg. He uses the term "Vehicles" to represent simple biologically inspired robots and how we perceive them. Coding simulated vehicles from his book would be a really cool programming exercise. Even better would be implementing them by programming Arduino based devices.